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post #19 of Old 08-16-2012
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Re: 1981 Evinrude 9.9hp 2str starts but won't run

I can't quite remember the cam follower arrangement but I think there was a mark that was supposed to lign up with the cam at idle speed? A good shop manual should show it. Suggest you get it running again and richen it up (counter clockwise) until it stumbles then lean it just enough to smooth it out, no more. Generally there is also an idle speed screw which is seperate from the mixture screw. On that motor it may be part of the cam linkage setup? Properly set up it should idle down fairly slow. Again, a good shop manual should help. Keep us posted

Paul T
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